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This study presents an improved dye-filling method for visualizing sensory neurons in C. elegans and P. pacificus nematodes. The enhanced protocol ensures more robust and consistent neuron imaging for developmental and morphological studies.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Nematology

Background:

  • Dye-filling is a key technique for studying sensory neuron development and morphology in nematodes.
  • Existing protocols can be limited in robustness and consistency across different neuron types and species.

Purpose of the Study:

  • To develop a modified dye-filling protocol for enhanced visualization of sensory neurons.
  • To improve the robustness and consistency of dye-filling in C. elegans and P. pacificus.
  • To enable consistent visualization of male-specific sensory neurons.

Main Methods:

  • A modified dye-filling protocol was developed and applied to C. elegans and P. pacificus.
  • The protocol was optimized for improved dye uptake and retention in target neurons.
  • Visualization of amphid, phasmid, inner labial, and male-specific ray neurons was assessed.

Main Results:

  • The modified protocol significantly improved the robustness of dye-filling for amphid, phasmid, and inner labial neurons.
  • Consistent and clear visualization of male-specific ray sensory neurons and support cells was achieved.
  • The protocol demonstrated efficacy across both C. elegans and the satellite model P. pacificus.

Conclusions:

  • The enhanced dye-filling protocol offers a more reliable method for sensory neuron research in nematodes.
  • This improved technique facilitates detailed morphological and developmental studies in C. elegans and P. pacificus.
  • The protocol aids in the consistent visualization of sex-specific neuronal structures.